#include<bits/stdc++.h>
using namespace std;
long long n,i,bru,brn,brl,brd;
string s;
int main()
{
freopen("smile.in","r",stdin);
freopen("smile.out","w",stdout);
cin>>n>>s;
for(i=0;i<n;i++){
    if(s[i]=='(') brl++;
    else if(s[i]==')') brd++;
}
for(i=0;i<n;i++){
    if(s[i]=='(') brl--;
    else if(s[i]==')') brd--;
    else{
        bru=bru+brd;
        brn=brn+brl;
    }
}
if(bru>brn) cout<<"positive";
else if(bru<brn) cout<<"negative";
else cout<<"neutral";


















return 0;
}